<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!-- cols:设置文本域宽度，rows：设置高度 -->
    <textarea cols="30" rows="30"></textarea>      
</body>
</html>